Discuss how has the issue of marriage/cohabitation changed in the past 50 years? How has dating changed over the years?

Mirroring the law, the way in which the mass media shows relationships has also changed dramatically over the years and the videos below are just a few examples of the types of shows that focus on different types of relationships. After watching these videos, for your discussion think about how has the issue of marriage/cohabitation changed in the past 50 years? How has dating changed over the years?